CN112953262A - Dynamic regulating power controller - Google Patents
Dynamic regulating power controller Download PDFInfo
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- CN112953262A CN112953262A CN201911256980.0A CN201911256980A CN112953262A CN 112953262 A CN112953262 A CN 112953262A CN 201911256980 A CN201911256980 A CN 201911256980A CN 112953262 A CN112953262 A CN 112953262A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
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Abstract
The invention relates to a dynamic regulation power supply controller, which comprises a working voltage input end, a feedback voltage input end, a driving voltage output end, a current sensing input end and a regulation power supply input end, and is matched with a driving unit, an input power supply processing unit, a transformer, a current sensing resistor, a power supply regulation unit, an output rectification unit and an output capacitor, wherein the input alternating voltage is converted into an output power supply to supply a load, the working voltage input end, the feedback voltage input end and the current sensing input end respectively receive working voltage, feedback voltage and a current sensing signal, and the driving voltage output end outputs driving voltage to drive the driving unit. Particularly, the driving voltage and the driving current are generated and dynamically controlled according to the feedback voltage and current sensing signals, so that the power conversion efficiency is greatly improved.
Description
Technical Field
The invention relates to a dynamic regulation power controller, in particular to a dynamic regulation power controller which utilizes feedback voltage to carry out dynamic regulation processing, generates and dynamically controls dynamic driving voltage and driving current according to feedback voltage and current sensing signals, and further converts input alternating current voltage into output power to supply load, thereby improving power conversion efficiency and improving the effect of electromagnetic interference (EMI).
Background
With the popularization of electronic products, power conversion technology becomes more and more important, because different electronic products require power sources with different voltages or currents to operate. For example, Integrated Circuits (ICs) require 5V or 3V, electric motors require 12V DC, and lamps in liquid crystal displays require higher voltage supplies, such as 1150V. Therefore, different power converters are needed to meet the requirements.
In the prior art, a switching power conversion technique is one of the commonly used power conversion techniques in the electronic industry, and mainly utilizes a high-frequency Pulse Width Modulation (PWM) signal to drive a switching transistor (or called a driving transistor) to be turned on, so as to control the current of an inductor (or a transformer) connected in series with the switching transistor.
However, the above-mentioned prior art has the disadvantage that the driving voltage for driving the switching transistor and the driving current flowing through the switching transistor are not properly adjusted according to the input voltage, so that in practical applications, the power conversion efficiency can be better achieved by reducing the switching loss and the turn-on loss only for a specific single input voltage, and the entire input voltage range cannot be covered, so the prior art can not improve the power conversion efficiency.
Therefore, there is a need in the electronic/electrical industry for a dynamic regulation power controller with a novel design, which utilizes a feedback voltage to perform dynamic regulation processing, generate and control a driving voltage and a driving current, and further convert an input ac voltage into an output power to supply a load, thereby improving power conversion efficiency and improving electromagnetic interference (EMI) effect, and further overcoming the problems in the prior art.
Disclosure of Invention
The present invention provides a dynamic regulation power controller, which comprises a working voltage input terminal, a feedback voltage input terminal, a driving voltage output terminal, a current sensing input terminal and a regulation power input terminal, and is matched with a driving unit, an input power processing unit, a transformer, a current sensing resistor, a power regulating unit, an output rectifying unit and an output capacitor, so as to convert an input ac voltage into an output power for supplying a load, and perform dynamic regulation processing according to the input ac voltage and the feedback voltage to generate and control a driving voltage and a driving current, thereby converting the input ac voltage into the output power for supplying the load.
Specifically, the working voltage input terminal receives a working voltage for the dynamic adjustment power controller to operate, the feedback voltage input terminal receives a feedback voltage for the dynamic adjustment processing operation, and the driving voltage output terminal outputs a driving voltage to the driving unit. In addition, the current sensing input terminal receives a current sensing signal, and the regulated power input terminal receives an input regulated power.
Further, the input power supply processing unit receives an input alternating voltage, generates an input voltage through filtering processing, and generates a working voltage through regulating the input voltage. The power supply regulating unit is connected with the input power supply processing unit to the regulating power supply input end and used for regulating the input voltage into the input regulating power supply.
The transformer comprises a primary side inductor and a secondary side inductor, and a conducting current and an induction current respectively flow through the primary side inductor and the secondary side inductor, wherein the secondary side inductor utilizes the conducting current to generate the induction current through the action of electromagnetic induction. The secondary side inductor, the output rectifying unit and the output capacitor are connected in series in sequence, and the load is connected in parallel with the output capacitor. In addition, the induced current flows from the secondary side inductor through the output rectifying unit and further flows to the output capacitor and the load which are connected in parallel, and the output capacitor generates the output power to supply the load.
Specifically, the feedback voltage is generated by a primary side feedback circuit or a secondary side feedback circuit corresponding to the input ac voltage or the output power, wherein the primary side feedback circuit connects the input ac voltage to the feedback voltage input terminal, and the secondary side feedback circuit connects the output power to the feedback voltage input terminal. The input power processing unit, the primary side inductor, the driving unit and the current sensing resistor are sequentially connected in series between an input alternating voltage and a grounding potential.
In particular, the driving voltage is a pulse width modulation pulse wave having a specific frequency.
More specifically, the dynamic adjustment process includes steps S10, S20, S30, S40, S50, S60, and S70, which correspond to the first time segment, the second time segment, the third time segment, the fourth time segment, the fifth time segment, the sixth time segment, and the seventh time segment, respectively.
In step S10, the driving voltage is pulled up from 0V to a turn-on voltage in a linear manner in a time period, the turn-on voltage is greater than a threshold voltage of the driving unit, the turn-on voltage is close to a miller plateau voltage of the driving unit, the driving unit starts to turn on when the driving voltage exceeds the threshold voltage, the driving current flowing through the driving unit gradually increases from 0A to a maximum driving current with the increase of the driving voltage, and the maximum driving current is changed according to the feedback voltage.
Step S20 is to maintain the driving voltage at the turn-on voltage and the driving current at the maximum driving current in the second time period, and then to pull up the driving voltage from the turn-on voltage to the high level voltage and maintain the driving current at the maximum driving current in the third time period in step S30, wherein the high level voltage is set to gradually increase with the increase of the feedback voltage.
Then, in step S40, the driving voltage is maintained at the high level voltage and the driving current is maintained at the maximum driving current in the fourth time period, and in step S50, the driving voltage is decreased from the high level voltage to the on voltage and the driving current is maintained at the maximum driving current in the fifth time period.
In step S60, in the sixth time period, the driving voltage is decreased from the on voltage to 0V, the driving unit is turned off when the driving voltage is lower than the threshold voltage, and the driving current is decreased to 0A. Then, step S70 is proceeded to maintain the driving voltage at 0V for continuously turning off the driving unit and the driving current is 0A in the seventh time period, and then step S10 is proceeded to repeat the above operations to realize the PWM control operation.
In short, the present invention utilizes the feedback voltage to perform dynamic adjustment processing, generates and controls the driving voltage and the driving current, and further converts the input ac voltage into the output power to supply the load, so that the overall power conversion efficiency can be greatly improved, and the effect of improving the electromagnetic interference (EMI) can be improved.
Drawings
FIG. 1 shows a schematic diagram of a dynamically adjusting power controller according to an embodiment of the invention.
FIG. 2 is a flow chart illustrating operation of a dynamically adjusting power controller according to an embodiment of the present invention.
FIG. 3 is a schematic diagram showing the operating waveforms of a dynamically adjusting power controller according to an embodiment of the present invention.
FIG. 4 shows a waveform diagram of a driving current for a dynamic regulation power controller according to an embodiment of the invention.
Wherein the reference numerals are as follows:
10 dynamic regulating power controller
20 drive unit
30 input power supply processing unit
40 Transformer
50 current sensing resistor
CC current source
CC1 first current source
CC2 second current source
CO output capacitor
D output rectifying unit
GND ground potential
ICC1 first constant current
ICC2 second constant current
Maximum driving current of IDRV
IDS drive current
IP on current
IS induced current
LP primary side inductor
LS secondary side inductor
RO load
RST power supply regulating unit
T1 working voltage input terminal
T2 feedback voltage input terminal
T3 drive voltage output terminal
T4 Current sense input
T5 regulating power supply input end
VAC input AC voltage
VCC operating voltage
VCOM feedback voltage
VCS current sense signal
VD drive voltage
VDRV high level voltage
VIN input voltage
VH input regulated power supply
VOUT output power supply
S10, S20, S30 and S40 steps
S50, S60, S70 steps
Detailed Description
The embodiments of the present invention will be described in more detail with reference to the drawings and the accompanying reference numerals, so that those skilled in the art can implement the embodiments of the present invention after studying the specification.
Referring to fig. 1, a schematic diagram of a dynamic regulation power controller according to an embodiment of the present invention is shown. As shown in fig. 1, the dynamic regulator controller 10 according to the embodiment of the invention includes a working voltage input terminal T1, a feedback voltage input terminal T2, a driving voltage output terminal T3, a current sensing input terminal T4, and a regulating power input terminal T5, and is matched with a driving unit 20, an input power processing unit 30, a transformer 40, a current sensing resistor 50, a power regulating unit RST, an output rectifying unit D, and an output capacitor CO, so as to perform dynamic regulation processing according to a feedback voltage VCOM and generate a driving voltage VD, thereby converting an input ac voltage VAC into an output power VOUT to supply a load RO, and greatly reducing Switching Loss (Switching Loss) and Electromagnetic Interference (EMI). In particular, the dynamic regulation power controller 10 can dynamically change the driving current IDS of the driving voltage VD according to the input ac voltage VAC and the output load state corresponding to the feedback voltage VCOM, thereby implementing the characteristic of constant current driving.
For example, the input AC voltage VAC may be 90-264 Vac, such as one of 90Vac, 115Vax, 230Vax and 264 Vac.
Specifically, the operating voltage input terminal T1 and the feedback voltage input terminal T2 of the dynamic regulator controller 10 respectively receive the feedback voltage VCOM and the operating voltage VCC, the driving voltage VD is outputted from the driving voltage output terminal T3, the current sensing input terminal T4 receives the current sensing signal VCS, and the input regulator VH is received from the regulator input terminal T5.
In essence, the driving unit 20 can be a Metal-Oxide-Semiconductor (MOS) device or a Bipolar device, although for the sake of clarity, the MOS device is shown as an exemplary example, and therefore the driving voltage output terminal T3 of the dynamic regulator controller 10 is connected to the Gate (Gate) of the MOS device, otherwise the driving voltage output terminal T3 is connected to the Base (Base) of the Bipolar device if the driving unit 20 is a Bipolar device.
Specifically, the input power processing unit 30 receives an input ac voltage VAC, and generates an input voltage VIN through filtering, and the input voltage VIN is further regulated to generate a working voltage VCC, so as to allow the dynamic regulation power controller 10 to operate. Further, the transformer 40 includes a primary inductor LP and a secondary inductor LS, and a conduction current IP and an induction current IS respectively flow through them.
More specifically, the present invention is to sequentially connect the input power processing unit 30, the primary side inductor LP, the driving unit 20, and the current sensing resistor 50 in series between the input ac voltage VAC and the ground potential GND, and generate the current sensing signal VCS at the connection point of the driving unit 20 and the current sensing resistor 50.
Further, the input voltage VIN from the input power processing unit 3 is transmitted to the primary side inductor LP, and the primary side inductor LP is further connected to the Drain (Drain) of the driving unit 20, and the Source (Source) of the driving unit 20 is connected to the ground potential GND. In addition, the secondary inductor LS is connected to the output capacitor CO and the output rectifying unit D, and the load RO is connected in parallel to the output capacitor CO.
Furthermore, the driving voltage VD generated by the input power processing unit 30 is essentially a Pulse wave with a variable frequency Pulse Width Modulation (PWM), such as a frequency of 20KHz to 1 MHz. Therefore, the dynamic adjustment power controller 10 can Turn on (Turn on) or Turn off (Turn off) the driving unit 20 by using the Gate (Gate) controlled by the driving voltage VD. When the driving unit 20 is turned on, the on-current IP flows through the driving unit 20, and when the driving unit 20 is turned off, the on-current IP is stopped.
The conduction current IP induces an induced current IS in the secondary inductor LS through electromagnetic induction, and since the secondary inductor LS, the output rectifying unit D, and the output capacitor CO are sequentially connected in series, the induced current IS flows from the secondary inductor LS through the output rectifying unit D to the output capacitor CO and the load RO connected in parallel, and the output capacitor CO generates the output power VOUT to supply the load RO.
The feedback voltage VCOM corresponds to the input ac voltage VAC or the output voltage VOUT, and may be generated, for example, by a primary-side feedback circuit (not shown) connecting the input ac voltage VAC to the feedback voltage input terminal T2 or a secondary-side feedback circuit (not shown) connecting the output voltage VOUT to the feedback voltage input terminal T2. For example, the transformer 40 may be additionally provided with an auxiliary inductor as a primary-side feedback circuit to generate a feedback voltage VCOM corresponding to the input ac voltage VAC by inducing the on-current IP, and may be calculated to obtain the output power VOUT. Alternatively, an isolation unit composed of an optocoupler and a light emitting diode is additionally provided as a secondary side feedback circuit connected between the output power VOUT and the feedback voltage VCOM, so that the feedback voltage VCOM corresponds to the output power VOUT and can be calculated to obtain the input ac voltage VAC.
In short, the dynamic regulation power controller 10 of the present invention is a power conversion system adapted to use a primary-side feedback circuit or a secondary-side feedback circuit.
In addition, the power conditioning unit RST is connected between the input power processing unit 30 and the conditioning power input terminal T5 for conditioning the input voltage VIN to the input conditioning power VH, such as the power conditioning unit RST comprising a voltage divider resistor, a rectifying diode, and a filtering capacitor, and the power conditioning unit RST is not described in detail since it belongs to the general technology.
Further, the dynamic regulation power controller 10 includes a current source CC for dynamically controlling a driving current IDS of the driving voltage VD in a constant current driving manner according to the input ac voltage VAC and the feedback voltage VCOM. For example, the current source CC may include a first current source CC1 and a second current source CC2, wherein the first current source CC1 and the second current source CC2 are connected in series between the regulated power input terminal T5 and the ground potential GND and receive the input regulated power VH via the regulated power input terminal T5, and a connection point of the first current source CC1 and the second current source CC2 is connected to the driving voltage output terminal T3, wherein the first current source CC1 provides the first constant current ICC1, the second current source CC2 provides the second constant current ICC2, the first constant current ICC1 flows from the input regulated power VH to the driving unit 20, and the second constant current ICC2 flows from the driving unit 20 to the ground potential GND.
Since the specific embodiments or circuits of the first current source CC1 and the second current source CC2 belong to the general prior art, they will not be described in detail. It is noted that the scope of the current source CC of the present invention covers substantially any current source.
In addition, referring to fig. 2 and fig. 3, an operation flow diagram and an operation waveform diagram of the dynamic adjustment process in the dynamic adjustment power controller 10 according to the embodiment of the invention are respectively shown, wherein the dynamic adjustment process includes steps S10, S20, S30, S40, S50, S60, and S70, which respectively correspond to the first time segment P1, the second time segment P2, the third time segment P3, the fourth time segment P4, the fifth time segment P5, the sixth time segment P6, and the seventh time segment P7.
First, the dynamic adjustment process of the dynamic adjustment power controller 10 of the present invention executes step S10, which mainly pulls the driving Voltage VD from 0V to the turn-on Voltage VGS in a linear manner in the first time period P1, and the turn-on Voltage VGS is greater than the Threshold Voltage VTH of the driving unit 20, wherein the turn-on Voltage VGS is close to the Miller platform Voltage (Miller platform Voltage) of the driving unit 20. In particular, when the driving voltage VD exceeds the threshold voltage VTH, the driving unit 20 starts to conduct, and the driving current IDS flowing through the driving unit 20 also gradually increases from 0A to the maximum driving current IDRV with the increase of the driving voltage VD, and the maximum driving current IDRV varies according to the feedback voltage VCOM corresponding to the input ac voltage VAC and the output power VOUT, and the output power VOUT corresponds to the output load state. For example, the maximum driving current IDRV increases with the increase of the input ac voltage VAC, i.e., the conduction of the driving unit 20 is enhanced, and the maximum driving current IDRV decreases with the increase of the feedback voltage VCOM, i.e., the conduction of the driving unit 20 is decreased.
Next, step S20 is proceeded to maintain the driving voltage VD at the turn-on voltage VGS and the driving current IDS at the maximum driving current IDRV in the second time segment P2. Then, step S30 is executed to pull the driving voltage VD from the turn-on voltage VGS to the high level voltage VDRV during the third time period P3, and the driving current IDS is still maintained at the maximum driving current IDRV.
It is noted that the dynamic adjustment process sets the high level voltage VDRV to gradually increase with the increase of the feedback voltage VCOM, that is, the high level voltage VDRV gradually increases with the increase of the input ac voltage VAC, and similarly, the dynamic adjustment process controls the maximum driving current IDRV to increase with the increase of the input ac voltage VAC, so that the driving force for the load RO can be increased, and the power conversion efficiency can be improved.
In other words, the maximum driving current IDRV and the high level voltage VDRV of the present invention can be adjusted not only according to the load, but also according to the input voltage VAC, for example, the maximum driving current IDRV and the high level voltage VDRV are different for different input voltages of 90 to 264 VAC.
Thereafter, the process proceeds to step S40, in the fourth time segment P4, the driving voltage VD is maintained at the high level voltage VDRV, and the driving current IDS is maintained at the maximum driving current IDRV. Then, step 50 is executed to decrease the driving voltage VD from the high level voltage VDRV to the turn-on voltage VGS in the fifth time period P5, and the driving current IDS is still maintained at the maximum driving current IDRV.
Next, step S60 is proceeded to drop the driving voltage VD from the turn-on voltage VGS to 0V in the sixth time segment P6, and when the driving voltage VD is lower than the threshold voltage VTH, the driving unit 20 is turned off, and the driving current IDS starts to drop at the driving voltage VD and drops to 0A when the driving voltage VD is lower than the threshold voltage VTH. Then, the process proceeds to step S70, the driving voltage VD is maintained at 0V to continuously turn off the driving unit 20 while the driving current IDS is 0A in the seventh time period P7, and then, the process returns to step S10 to repeat the above operations, thereby implementing the PWM control operation.
To further illustrate the operation of the first current source CC1 and the second current source CC2, reference may be made to fig. 4 to drive the waveform of the current IDS. As shown in fig. 4, the driving voltage VD is simplified to represent a waveform for turning on and off the driving unit 20, i.e. the time T1 and the time T2 represent the time when the driving unit 20 starts to turn on and starts to turn off, respectively, and the driving current IDS includes the first constant current ICC1 and the second constant current ICC2, wherein the first constant current ICC1 only occurs during the transient period when the driving unit 20 starts to turn on, and the second constant current ICC2 only occurs during the transient period when the driving unit 20 starts to turn off. Particularly, the dynamic adjustment process of the present invention adjusts the magnitudes of the first constant current ICC1 and the second constant current ICC2 according to the feedback voltage VCOM, thereby improving the power conversion efficiency.
In summary, the present invention is characterized in that the driving unit, the input power processing unit, the transformer, the current sensing resistor, the power conditioning unit, the output rectifying unit and the output capacitor are collocated, the working voltage input terminal, the feedback voltage input terminal and the current sensing input terminal respectively receive the working voltage, the feedback voltage and the current sensing signal, and the driving voltage output terminal outputs the driving voltage for driving the driving unit connected to the driving voltage output terminal, so as to convert the input ac voltage into the output power for supplying the load. Particularly, the dynamic adjustment process is performed according to the feedback voltage and the current sensing signal to generate and control the driving voltage current, and the driving current is dynamically changed according to the feedback voltage and the input alternating current voltage, thereby greatly improving the power conversion efficiency and improving the effect of electromagnetic interference (EMI).
The foregoing is illustrative of the preferred embodiment of the present invention and is not to be construed as limiting thereof, since any modification or variation thereof within the spirit of the invention is intended to be covered thereby.
Claims (5)
1. A dynamic regulation power controller is characterized in that the controller is used for matching with a driving unit, an input power processing unit, a transformer, a current sensing resistor, a power regulating unit, an output rectifying unit and an output capacitor, and carrying out dynamic regulation processing according to an input alternating voltage and a feedback voltage to generate a driving voltage and control a driving current, and the dynamic regulation power controller comprises:
a working voltage input end for receiving a working voltage for the dynamic regulation power controller to operate;
a feedback voltage input end for receiving the feedback voltage for the dynamic adjustment processing operation;
a driving voltage output end for outputting the driving voltage to the driving unit;
a current sensing input terminal for receiving a current sensing signal; and
a regulated power input for receiving an input regulated power,
wherein the input power supply processing unit receives the input AC voltage and generates an input voltage through a filtering process, the input voltage is adjusted to generate the working voltage, the power supply adjusting unit is connected with the input power supply processing unit to the adjusting power supply input end for adjusting the input voltage into an input adjusting power supply, the transformer comprises a primary side inductor and a secondary side inductor, a conducting current and an induced current respectively flow through the primary side inductor and the secondary side inductor, the induced current is induced by the conducting current through the electromagnetic induction effect, the secondary side inductor, the output rectifying unit and the output capacitor are sequentially connected in series, a load is connected in parallel with the output capacitor, the induced current further flows to the output capacitor and the load connected in parallel through the output rectifying unit by the secondary side inductor, the output capacitor generates an output power to supply the load, the feedback voltage is generated by a primary side feedback circuit or a secondary side feedback circuit and corresponds to the input AC voltage or the output power, the primary side feedback circuit is connected with the input AC voltage to the feedback voltage input end, the secondary side feedback circuit is connected with the output power to the feedback voltage input end, the input power processing unit, the primary side inductor, the driving unit and the current sensing resistor are sequentially connected between the input AC voltage and a ground potential in series, the driving voltage is a Pulse Width Modulation (PWM) Pulse wave with a frequency,
and the dynamic adjustment process comprises:
a step S10, pulling the driving voltage from 0V to a turn-on voltage in a linear manner in a first time period, the turn-on voltage being greater than a threshold voltage of the driving unit, the turn-on voltage being close to a miller plateau voltage of the driving unit, the driving unit being turned on when the driving voltage exceeds the threshold voltage, a driving current flowing through the driving unit gradually increasing from 0A to a maximum driving current with the increase of the driving voltage, the maximum driving current being changed according to the feedback voltage;
a step S20, maintaining the driving voltage at the on voltage and the driving current at the maximum driving current during a second time period;
a step S30, during a third time period, pulling the driving voltage from the on voltage to a high level voltage and maintaining the driving current at the maximum driving current, the high level voltage being set to gradually increase with the increase of the feedback voltage;
a step S40, maintaining the driving voltage at the high level voltage and the driving current at the maximum driving current in a fourth time period;
a step S50, decreasing the driving voltage from the high level voltage to the on voltage and maintaining the driving current at the maximum driving current during a fifth time period;
a step S60, during a sixth time period, decreasing the driving voltage from the on voltage to 0V, the driving unit being turned off when the driving voltage is lower than the threshold voltage, and the driving current being decreased to 0A; and
a step S70, during a seventh time period, the driving voltage is maintained at 0V to continuously turn off the driving unit and the driving current is 0A, and then the process returns to the step S10 to repeat the above operations to realize the PWM control operation.
2. The dynamic regulator controller as claimed in claim 1, wherein the driving unit comprises a Metal-Oxide-Semiconductor (MOS) device or a Bipolar device.
3. The dynamically regulated power supply controller according to claim 1, wherein said drive voltage has a frequency of 20KHz to 1 MHz.
4. The dynamic regulation power controller of claim 1, wherein the input AC voltage is 90-264 Vac.
5. The dynamic regulation power supply controller of claim 1, further comprising a current source for dynamically controlling a driving current of the driving voltage in a constant current driving manner according to the input AC voltage and the feedback voltage, the current source comprises a first current source and a second current source, the first current source and the second current source are connected in series between the regulated power input terminal and the ground potential and receive the input regulated power through the regulated power input terminal, a connection point of the first current source and the second current source is connected to the driving voltage output terminal, the first current source provides a first constant current, the second current source provides a second constant current, the first constant current flows from the input regulated power supply to the driving unit, and the second constant current flows from the driving unit to the ground potential.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911256980.0A CN112953262B (en) | 2019-12-10 | 2019-12-10 | Dynamic regulating power supply controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911256980.0A CN112953262B (en) | 2019-12-10 | 2019-12-10 | Dynamic regulating power supply controller |
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| Publication Number | Publication Date |
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| CN112953262A true CN112953262A (en) | 2021-06-11 |
| CN112953262B CN112953262B (en) | 2022-06-28 |
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| CN112953262B (en) | 2022-06-28 |
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